HELLA SMOKE from my SR

[858slider]

Whasup everybody, this is the first post in awhile so I'll get to the point.. I dropped in the SR and it runs fine except for a little rough idling but I'm getting alot of smoke, so I had a shop do a diagnostic and all cylinders are running with no problems so i guess everythings cool. so why is it smoking so much?? too rich?? it's black smoke..will the SAFC II fix it?? thanks, James
Modified by 858slider at 2:37 PM 7/13/2006

[xsublimefrekx]

it sounds like it is running to rich. What mods do you have to it? If you want a SAFC I have one without the harness i think, brand new with the plastic still on it.

[858slider]

megan exhaust, HKS intake w/greddy blow off, how much for the afc?
Modified by 858slider at 4:20 PM 7/13/2006

[nzmoman]

when I had that issue I went to get it tuned and found that my ecu was acting wierd, but after it ran at idle for while it went back to normal. You could also be burning off old crap and check your air meter.

also make sure that your plugs arent fowled. I had to replace my ignitor after the swap and my fuel pump had left me with wet plugs.

[highmilehatch]

You don't need an AFC. The stock ECU will be fine. Follow the procedure in the FSM to set the ignition timing and idle speed. What type of plugs are you running and did you replace them when you put the engine in?

[858slider]

I did replace the plugs when I swapped it, I forgot what kind though.

[da40]

that happen to me too,when the motor was newly instaled it would burn all that old crap inside ive seen it on other newly swapped cars ,now if it keeps happening thenu might need that safc my friend has a s14 witha black top and he runs rich as hell too all stock besides fmic,bov,koyo just play with it alittle

[highmilehatch]

Stock injectors and ECU do not require an AFC. Don't try a band-aid approach to mask a problem.

[nzmoman]

definatly agreed. you should always make sure your car is running correctly before install engine or electrical upgrades. Ignoring the problem can lead to you having to invest in another motor.

[858slider]

dude, I'm not ignoring any problem, just trying to fix it. I took it in for diagnostic and they say it's cool, just rich. so how do i fix it, afc or hks fcon vpro right?? please advise.

[jdm_master_X]

well those two guys are just letting you know. they dont mean anything bad.

but as far as your smoking is concerned, obvious tests are cylinder leakdown. perhaps your valves are not seating completely and letting drops of oil into the combustion chamber.

a rich condition, of course, test your timing, spark plugs, fuel, etc. if the motor has been sitting for awhile it will do that as well. mine smoked black for awhile and then it ran fine and still does now.

[Blown240sx]

could also have a sticky injector or maybe bad FPR? Dude you have many things to look at here. You need to make a list of things it could be and just start checking them off.

[858slider]

THanks everybody. I'll make a list, based on your input. I really appreciate everyones help. I'm pretty new to forums and never used them in the past but after this I'll be coming back. peace

[S13FASTBACKSR]

I was also thinking a bad fpr. and also have you checked yet to see if your spark plugs are fouled up. If you check and come to find out that only one of your plugs is fouled then your fuel injector to that plug is most likely bad. for instance if #2 spark plug is fouled then replace #2 fuel injector. Also when you drive your car does it seem to misfire or does it drive fine but just have a bad idle? keep us informed

[858slider]

What exactly am I looking for in a fouled plug? During daily drive, it backfires ALL THE TIME. it sucks cuz it scares the hell out of everyone on the road. When I'm at a red light it idles poorly, seems like it's about to stall sometimes and the smoke comes and goes. I decided not to use AFC 2 or the HKS FCON V PRO (although I can get for CHEAP) since I'm stock injectors and ECU. So then, what should I be looking to upgrade? injectors? if so what size? another dumb question what's my FPR??

[NismoGriff]

FPR = Fuel Pressure Regulator

[S13FASTBACKSR]

when looking for a fouled spark plug you have to take your spark plug out to see if the tip is blackened. so check on that and do what i said, if only one is blackened then replace that fuel injector. If none are blackened then I think its possible that your fpr has gone bad causing the richness. as far as the backfiring, if your car is backfiring then your timing is probably off a little. this may also be why your car is idling low. also does your car misfire at all? does it seem to hesitate anywhere throught the rpm range? or are there any other problems you havent mentioned?

[858slider]

sometimes I feel hesitation around 3100 like highway driving. I don't have the SR20 FSM, does the US manual cover steps for ignition timing and idle speed? I haven't done any servicing myself on the SR but is it possible that a loose connection on the map cause smoking? Also where can I get the SR20DET FSM?

Modified by 858slider at 4:02 PM 7/17/2006
Modified by 858slider at 4:42 PM 7/17/2006

[S13FASTBACKSR]

Slight hesitation and richness sounds like timing. but way more fuel burning than should be could be many things. it would be best if you could test these things for us so we could narrow down your list (fouled plugs, tps voltage, timing) could also be a bad maf or fpr but those would cost $$$ to figure out whether or not thats the problem. You could check fouled plugs, tps voltage and timing for free. Try to do that so we can narrow down the problem.

[highmilehatch]

You don't need to upgrade anything. You can't run larger injectors on the stock computer anyway unless you use a crude piggyback. Focus more on learning why your car is acting the way it is, rather than what to buy next. If it's backfiring, obvious causes are timing or a rich mixture. You car should be running 100% on stock ECU/MAFS/injectors if everything is working correctly. Download the FSM here: http://www.zeroyon.com Use the S14 SR manual. The EC section walks you through every troubleshooting method. You just have to have the patience to read and will to learn. Read as much as you can and comprehend it. Then tackle your car's problems. If you want information spoonfed to you, you'll never understand whats going on.

[858slider]